Results 121 to 130 of about 5,363 (277)

Modeling sustainable crowd logistics delivery networks: A scoping systems thinking review

Sustainability Analytics and Modeling
Traditional logistics systems face numerous challenges, such as driver shortages, low load factors, and increasingly high barriers to urban distribution.
Florian Cramer, Christian Fikar
doaj   +1 more source

Understanding the links between human health, ecosystem health, and food systems in Small Island Developing States using stakeholder-informed causal loop diagrams. [PDF]

PLOS Glob Public Health, 2023
Guariguata L, Hickey GM, Murphy MM, Guell C, Iese V, Morrissey K, Duvivier P, Herberg S, Kiran S, Unwin N.   +9 more
europepmc   +1 more source

From text to map: a system dynamics bot for constructing causal loop diagrams

System Dynamics Review
AbstractWe introduce and test the System Dynamics Bot, a computer program leveraging a large language model to automate the creation of causal loop diagrams from textual data. To evaluate its performance, we ensembled two distinct databases. The first dataset includes 20 causal loop diagrams and associated texts sourced from the system dynamics ...
Niyousha Hosseinichimeh, Aritra Majumdar, Ross Williams, Navid Ghaffarzadegan   +3 more
openaire   +2 more sources

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

A data-driven approach for storing and analyzing Causal Loop Diagrams

LAUREA MAGISTRALENell’ambito del Systems Thinking e Systems Dynamics, vengono utilizzate metodologie per comprendere e analizzare le dinamiche dei sistemi complessi.
MAFTEI, LAURA DANIELA
core  

Use of qualitative systems mapping and causal loop diagrams to understand food environments, diet and obesity: a scoping review protocol. [PDF]

BMJ Open, 2023
Stankov I, Henson RM, Headen I, Purtle J, Langellier BA.   +4 more
europepmc   +1 more source

Refining the causal loop diagram: A tutorial for maximizing the contribution of domain expertise in computational system dynamics modeling.

Psychological Methods
Complexity science and systems thinking are increasingly recognized as relevant paradigms for studying systems where biology, psychology, and socioenvironmental factors interact. The application of systems thinking, however, often stops at developing a conceptual model that visualizes the mapping of causal links within a system, e.g., a causal loop ...
Loes Crielaard, Jeroen F. Uleman, Bas D. L. Châtel, Sacha Epskamp, Peter M. A. Sloot, Rick Quax   +5 more
openaire   +2 more sources

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source